baber/WOPTO huggingface dataset:
Patent GB-951119-A (GB)
Title: Improvements in multi-layer film heaters in strip form
IPC: H05B3/68
Filed: 1961-02-06
Abstract: 951,119. Resistance heating films. GENERAL ELECTRIC CO. Feb. 6, 1961 [Feb. 8, 1960], No. 4371/61. Heading H5H. A heating element for a hot plate or oven has a resistive film bonded to an insulating base, the film including superimposed layers of gold and platinum in direct contact with one another: the platinum prevents degeneration of the gold layer arising from grain growth and agglomeration. A base layer of platinum 40, Fig. 4, and superimposed layer of gold 41 are bonded to the underside of a silica plate 11 in a spiralled serpentine pattern (Fig. 1, not shown) to form a hot plate 11, Fig. 2, held within a ring 16 and reflector 17, the complete structure being mounted on a pivot 26 by member 20 and a plate 21, which is attached to ring 16 and on which is mounted a phenolic resin terminal block 30. A tongue 33 of the plate 11 projects down between plate 21 and block 30, three spring blade silvered contacts 35 contacting each end and the mid-point of the resistive film. Lamp 45, mounted beneath a tube 46, illuminates the centre of the hot plate. The insulating base 11 may alternatively be of ceramic, and the addition of rhodium to the resistive film is referred to.
Patent GB-733479-A (GB)
Title: Improvements in x-ray tubes
Inventor: SALKAUSKAS STASYS
IPC: H01J35/16
Filed: 1952-02-19
Abstract: 733,479. X-ray tubes. GENERAL RADIOLOGICAL, Ltd. April 23, 1953 [Feb. 19, 1952], No. 4382/52. Class 39 (1). A rotating anode X-ray tube the envelope of which is in the main a surface of revolution about the axis of rotation of the anode, has a window set in a part g of the envelope projecting at a greater distance from the axis of the tube than the neighbouring portions c of the envelope, to minimize the effects of wall charges on the window. The window f may be of glass, or a plate of beryllium or other metal permeable to X-rays may be sealed into the end of the projecting part of the envelope. If a metal window is used it may be connected to a source of E.M.F.
Patent GB-178616-A (GB)
Title: Improvements in and relating to electric lamp discharge devices, or the like
IPC: H01J61/64
Filed: 1921-02-09
Abstract: 178,616. British Thomson-Houston Co., Ltd., (General Electric Co.). Feb. 9, 1921. Vacuum tubes; low-pressure metallic-vapour apparatus.-In a lamp in which a discharge current passes between sections of an incandescent filament, in parallel with the current therethrough, the pitch of the spiral in which the filament 5 is wound is gradually increased near the negative terminal 3 so that heat is more readily dissipated at this part and disintegration is avoided. In a lamp for use with alternating current, both ends of the filament are similarly opened out. The bulb may be filled with an ionizable vapour, such as sodium, or with a gas such as neon at a pressure of about 10 microns of mercury, or may be evacuated. Specification 175,032 is referred to.
Patent GB-367556-A (GB)
Title: Improved conduit couplings for electrical installations
IPC: H02G3/06
Filed: 1931-02-14
Abstract: 367,556. Pipe couplings. FORSYTH, J. C. and FORSYTH, G. C., 72, Promenade, Portobello, Midlothian.. Feb. 14, 1931, No. 4694. [Class 99 (i).] A pipe coupling comprises an internally screwthreaded member 9 adapted to fit loosely over the pipe 6, having an internal coned portion 10 which receives a contractible metal 'split ring 12 internally roughened and assembled in the member 9 so as to prevent relative rotation as by a lug 13 in a slot 14, so that the outer covering of the pipe is cut through as the nut 9 is revolved in the pipe 6 to screw the ring 12 against the end of a barrel, sleeve 7 and socket upon which the nut is screwed.
Patent GB-852245-A (GB)
Title: Improvements relating to photographic type-composition
IPC: B41B21/16
Filed: 1957-02-12
Abstract: 852,245. Photographic type-composing. HIGONNET, R. A. E, and MAYROND, L. M. Feb. 12, 1957 [March 16, 1956], No. 4738/57. Class 98(1) In photographic type-composing apparatus comprising a projection system for forming in an image plane images of matrix characters selectively disposed in a projection position, such system includes a movable support carrying a plurality of lenses, and means is provided for locating said support in each of a plurality of selected positions in each of which an individual lens on the support is located in an operative position for the formation of a matrix-character image, some of said lenses being adapted for the formation of their respective images at locations displaced from "a normal location in said image plane", by which is meant that location in the image plane in which any particular matrix character image must be formed to result in a corresponding character image being normally located with respect to a common base line of other characters in the same line on a photosensitive surface which may, but need not, be coincident with the image plane. By this arrangement, a character H in normal position (Fig. 3) may be provided with a superscript 2, a subscript 5, and inferiors and superiors 3, 6 and 1, 4 therefore The normal position character may be in one of several different point sizes while typically the superscript and subscript are in a small point size and their inferiors in a somewhat smaller size. As shown, the various lenses for producing such an arrangement of images are carried on a disc 20 rotatable about a fixed axis 22 and provided with recesses 24 engageable by a spring-pressed rod (Fig. 1 not shown) to locate the selected lens in operative position in the projection system. Lenses 6-0, ...., 36-0 centred on the circle 25 provide normally positioned characters of different sizes from 6 to 36- point; lenses 6-2, 6-5 provide 6-point superscript and subscripts respectively; and lenses 5-1, 5-3, 5-4, 5-6 provide 5-point superiors and inferiors thereto. Specifications 691,738 and 691,763 are referred to.
Patent GB-268927-A (GB)
Title: Improvements in and relating to polishing or pouncing drums or rollers
IPC: B24D9/02
Filed: 1926-02-19
Abstract: 268,927. Eve, r. H., and Wood, W. J. Feb. 19, 1926. Wheels.-Sand-paper 8 is supported on a rubber ring 7 carried by a drum composed of sectors expanded by a spiral thread. The sectors 4 are guided radially of a boss 2 by slots and guide pieces 9. A sleeve, which can be rotated and locked, carries a spiral thread 3<a> engaging a spiral thread on the sectors.
Patent GB-196437-A (GB)
Title: Improvements appertaining to lathes and like machine tools
IPC: B23Q5/40
Filed: 1922-02-18
Abstract: 196,437. Smith, A. Feb. 18, 1922. Tumbler bearings.-In lathes &c. having a series of travelling bearers for supporting a leadscrew or other longitudinal shaft at points intermediate its ends, the saddle is provided with means to engage and move the bearers on its advance and to replace them in their original positions on its return movement. The saddle 5<c>, Fig. 5, carries a stud 2 tapered at the end a and provided with a groove c. A bearer 3 for the shaft B and lead-screw A is normally carried by a fixed support 7 and is provided with spring-pressed plungers 5, 5<a>, Fig. 8, which are adapted to engage with the groove c thereby causing the bearer to advance with the saddle. On the return of the saddle a stop-pin 11 in the fixed support coacts with a pin 9 on the bearer and arrests the bearer in its normal position. In a modification, a stud 2, Fig. 9, has two tapered portions so as to carry two bearers 3, 3<a>, Fig. 3. In this embodiment the bearer-supports are arranged at different levels.
Patent GB-925721-A (GB)
Title: Semiorganic compounds containing phosphorus and silicon
IPC: C08K5/54
Filed: 1960-02-11
Abstract: The invention comprises phosphorus-containing organosilanes of the formula <FORM:0925721/IV(a)/1> where A is a halo, alkoxy, hydroxy, alkyl, alkaryl, cycloalkyl, aryl or aralkyl radical, n is 0 to 3, Z is a saturated hydrocarbon residue of 1 to 10 carbon atoms or a direct Si-C linkage, R1 and R2 are alkyl, cycloalkyl, aryl, alkaryl or aralkyl, R3 and R4 are alkyl, cycloalkyl, aryl, alkaryl, aralkyl or hydrogen, and Y is oxygen or sulphur or no substituent. They are made by reacting a secondary phosphine R1R2PH, or a phosphine sulphide or oxide R1R2PH(Y) with an unsaturated silane AnSi-(Z-CR3=CHR4)4-n.  A catalyst may be used, e.g. azo compounds, organic peroxides, tertiary amines or ultraviolet light.  A solvent may also be present, e.g. aliphatic and aromatic hydrocarbons, ethers, cyclic ethers and thioethers. The compounds in which Y is oxygen or sulphur can also be prepared from those in which Y is absent by treating with sulphur or with an oxidizing agent such as air, hydrogen peroxide, potassium permanganate or perchlorate, manganese dioxide or nitrogen oxides.  The examples describe the preparation of (1) <FORM:0925721/IV(a)/2> (2) <FORM:0925721/IV(a)/3> (3) Si[CH2CH2CH2P(Ph)2]4; (4) (EtO)2Si[CH2CH2CH2P(Et)2]2 (5) Cl2PhSiCH2CH2P(Ph)2; (6) Me2Si[(CH2)3PEt2]2; (7) (EtO)3SiCH2CH2PEt2; (8) [Et2P(CH2)3]2Si(OMe)2; (9) and (10) (EtO)3SiCH2CH2P(S)(Et)2 and (EtO)3SiCH2CH2P(O)Et2; (11) [Et2P(CH2)3]2Si(OH)2.  Uses: Water-repellent films, lubrication, hydraulic fluids, textile adjuvants, antifoaming and biocidal agents, flame retarders, plasticizers, vulcanization accelerators, antioxidants, stabilizers, hydrolysis (see Specification 925,722) and co-hydrolysis.
Patent GB-625762-A (GB)
Title: Improvements in and relating to the separation of hydrocarbon gases at low temperatures
IPC: C07C7/20
Filed: 1947-02-19
Abstract: 625,762. Separating gases. RUHEMANN, M., and PETROCARBON, Ltd., Feb. 19, 1947, No. 4812. [Class 8(ii)] In a process for theseparation at low temperatures of hydrocarbon-gases consisting of alkanes and/or alkenes with or without hydrogen and comprising a liquefaction step taking place down to a temperature not below -138‹C., formation of ice in the pipes and vessels of the apparatus is prevented by the introduction therein of sufficient methanol as will reduce the temperature of ice formation to one below that at which the liquefaction step ends. As shown, gas from a compressor m, Fig. 2, traverses a preliminary cooler p and water separator q and a drier r-leaving by a pipe b-into a constriction a, Fig. 1, of which methanol vapour amounting to 77 per cent of the water vapour content of the gas is introduced from chambers l, e by a valve j and a duct c. Liquefaction of the hydrocarbon constituents occurs in heat exchangers t and the resulting liquids including the methanol water mixture are collected in a vessel u. Gaseous and liquid constituents of the mixture are separated in towers x. The level of the liquid methanol in the chamber e is maintained constant by a float valve k, and the methanol is vaporized by gas flowing through a branch pipe d and issuing from a plurality of holes g.
Patent GB-480339-A (GB)
Title: Improved binding preparations
IPC: C09J161/26
Filed: 1936-08-17
Abstract: Dry binding preparations suitable for use in the process described in Specification 480,316 comprise an aminotriazine-formaldehyde condensation product and a hardening accelerator.  The dry preparations may be converted into glues by mixture with water or they may be used in the form of glue films containing the condensation product and the hardening accelerator as an impregnation on a thin paper sheet.  The hardening accelerator may be acid, neutral or basic such as persulphates, oxalic acid, citric acid, dibromocinnamic acid, ammonium chloride, ammonium sulphate, or diammonium phosphate.  The preparations may also contain fillers, softeners, water-repelling agents or colours, such as kaolin, gypsum, asbestos, barium sulphate, ivory nut flour, soya bean flour, rye flour, starch, and aluminium salts.  In examples: (1) a pure resin is prepared by condensing 2 : 4 : 6-triamino-1 : 3 : 5-triazine with aqueous formaldehyde and drying the syrup obtained and the product mixed with (a) barium sulphate and oxalic acid, (b) asbestos powder and diammonium phosphate, (c) soya bean flour and potassium persulphate, (d) potato starch and citric acid, (e) ammonium sulphate, and (f) rye flour, potato starch and potassium persulphate; (2) crude melamine is condensed with aqueous formaldehyde and the dried product dissolved in cold water is mixed with ammonium sulphate of dibromocinnamic acid and used to impregnate an absorbent kraft paper to obtain a glue film. Specifications 455,008 and 468,677 also are referred to.
Patent GB-234545-A (GB)
Title: Improvements in or relating to methods of and means for moulding concrete plaster and like structures
IPC: B28B7/00
Filed: 1924-02-26
Abstract: 234,545. Clifton, W. E., and Clifton- Ewart Construction Co., Ltd. Feb. 26, 1924. Moulds; processes.-Concrete, plaster, &c. members of angular cross-section are moulded one upon another, utilizing a previously-formed member as a mould base for a succeeding member. A mould frame is employed comprising two angular members 11, Fig. 1, spaced apart and connected at the outer extremities by side members 12 and with an outer cover 13 extending completely over one limb. The frame is associated with a master mould 10 consisting of a hollow or solid block on which the first concrete &c. member is moulded. The frame is of light metal and flexible to enable it to be removed from a moulded member. Fig. 2 shows a modification in which the member 12 at the lower edge of the mould frame is omitted, the mould being closed by members 15, 16, the frame being removable vertically. In a further modification, a pair of frames, each associated with a master mould, is employed, arranged with adjacent vertical sides, a removable thin steel partition separating the two mould spaces and replacing the covers 13; after a pair of members have been moulded, the partition is withdrawn and the moulds &c. separated for readjustment of the mould frames. Adhesion between successive members is prevented by a layer of paper &c.
Patent GB-378341-A (GB)
Title: Apparatus for crystallizing sugar and other solutions by evaporation or cooling
IPC: C13B30/02
Filed: 1932-02-19
Abstract: <PICT:0378341/III/1> <p/2> <PICT:0378341/III/2> <PICT:0378341/III/3> Solutions are crystallized by evaporation or cooling in a trough-like receptacle divided by stationary partitions into a number of compartments which co-operate with a series of rotary partitions adapted to close periodically the passages in the stationary partitions and thus to trap the liquid in one or more adjacent compartments.  A pan 1 provided with cooling or heating coils 13 is divided into compartments 3 by partitions 2 which are spaced from the bottom of the pan so as to leave semicircular openings 4.  A horizontal shaft 5 carries semicircular discs 9 staggered in relation to one another which on rotation close the passages 4 once every revolution and thus alternatively establish and interrupt communication between adjacent compartments.  The juice is supplied through a pipe 10 and discharged through a pipe 11 and flows through the pan under gravity.  In the modification shown in Fig. 4 the juice is circulated by mounting a screw conveyer in the shaft 19 carrying the rotary discs 31 and the open trough is heated or cooled by supplying liquid through a hollow rotary shaft 18 to hollow discs 20 provided with recesses which mesh with the screw blades 32.  Scrapers 37<1> are placed between the discs.  In the modification shown in Fig. 6 the crystallizing tank 1 is revolubly mounted and is provided with annular partitions 49 which co-operate with partition 48 on the stationary heating or cooling drum 46.
Patent GB-252448-A (GB)
Title: Improvements in injectors for gas burners
IPC: F23D14/48
Filed: 1925-02-24
Abstract: 252,448. Keith & Blackman Co., Ltd., J., and Keith, G. Feb. 24, 1925. Atmospheric gas burners. - In a burner for bread and biscuit ovens or the like, a venturi-tube 1 is adapted to be moved axially in the burner body 2 relatively to a nipple 4 for regulating the air supply and against a plug 9 for shutting off at will communication through the tube between the interior and the exterior of the oven or the like, the arrangement being such that the restoration of the original connection suffices for the proper re-setting of the air inlet adjustment. The nipple 4 is carried by an axially adjustable plug 16 having apertures 7 communicating with the gas supply pipe 3 so that, particularly when producer gas is used, the nipple may be withdrawn from a seatmember 8 to allow additional gas to pass around it into the tube 1. The plug 9 is removable for cleaning purposes. In one form, the tube 1 is operated by a handle 12 pivoted on a pin 13 and carrying a pin 12<1>, which passes through a slot 14 in the body 2 into a groove 15 in the wall of the tube 1, the movement of the tube away from the plug 9 being limited by an adjustable screwstop 16, locked in position by a transverse screw 17. In a second form, the tube 1 is provided with a pin 18, Fig. 4, passing through a slot 19 in the body 2 and through a tapered aperture 20<1> in a pivoted handle 20, an adjustable screw stop 22 being provided. In a third form, the tube 1 is provided with a transverse operating handle which passes through an inclined slot in the body 2.
Patent GB-696886-A (GB)
Title: A method for irreversibly decolorizing streptomycin, salts of streptomycin, dihydrostreptomycin and the salts of dihydrostreptomycin
IPC: C07H15/238
Filed: 1950-03-01
Abstract: Streptomycin, salts of streptomycin, dihydrostreptomycin and salts of dihydrostreptomycin are irreversibly decolorized by treating a solution of a compound of said group under acidic conditions in a solvent medium with an oxidizing agent selected from chlorine, potassium permanganate, hydrogen peroxide and sodium dichromate until maximum decolorization is effected.  The solutions are aqueous, aqueous alcoholic or alcoholic.  The pH is 1.5 to 6.0, obtained by addition of a suitable acid or produced by bubbling the chlorine through a neutral solution.  Preferably, methanolic solutions are treated at a pH below 3.5.  In examples the oxidizing agents are (a) 5 per cent aqueous potassium permanganate, (b) 5 per cent aqueous sodium dichromate, (c) 30 per cent hydrogen peroxide and (d) chlorine.  Specification 620,415 is referred to.
Patent GB-672975-A (GB)
Title: Improvements in the manufacture of cellulose ethers
Inventor: DOWNING JOHN
IPC: C08B11/193
Filed: 1949-02-25
Abstract: Cellulose ethers are made by reacting alkali cellulose and one or more alkyl halides in a fluid phase, the alkali cellulose being in a form having a packing density above 15 lb./cu. ft., obtained by breaking up a sheet or like mass of alkali cellulose. "Packing density" is defined as the apparent density of a mass of fragments of alkali cellulose which has been shaken down but not compacted by external pressure.  The preferred packing density is between 18 and 30 lbs./cu. ft.  The alkylating agent may be in either the liquid or the gaseous phase.  The alkali cellulose preferably contains less than 5 mols. of alkali for each mol. anhydro-glucose unit.  The disintegration of the alkali cellulose may be brought about in a Bridge-Banbury mixer or by cutting it into pieces of superficial area between about 1 and 6 square inches.  Methyl and other alkyl celluloses, especially water-soluble alkyl celluloses, may be made by alkylating the so-prepared alkali cellulose under pressure, other specified products being water-soluble ethyl cellulose, methyl ethyl cellulose, methyl isopropyl cellulose, methyl hydroxyethyl cellulose and ethyl hydroxyethyl cellulose.  The reaction may be carried out without stirring to give a product of high clarity. An example is given of the preparation of methyl cellulose.
Patent GB-1003801-A (GB)
Title: Nitrogen-containing condensation polymers
IPC: C08G73/06
Filed: 1964-02-07
Abstract: A linear condensation polymer comprises hydantoin nuclei linked alternately by a methylene radical attached to the 1,11-N-atoms of two successive hydantoin nuclei, and by an organic radical attached to the 3,31-N-atoms of two successive hydantoin nuclei.  The polymer may have recurring units of formula <FORM:1003801/C3/1> where R and R1 are alkyl radicals which may have polar substituents which do not react with formaldehyde or R and R1 together with the 5-C-atom form a five- or six-membered saturated hydrocarbon or heterocyclic ring, and Y is a radical or formula <FORM:1003801/C3/2> where Z1 and Z2 are hydrogen atoms or monovalen organic radicals free of substituents that are reactive to hydantoin-ring nitrogen or to formaldehyde, and Z3 is a divalent organic radical also free of such substituents, or Z1 and Z2 together represent a divalent radical free of such substituents.  The polymers may be prepared (1) by condensing a hydantoin with formaldehyde, followed by the condensation of the resulting 1,11-methylene bis-hydantoin with a dihalo compound wherein both halogen atoms are attached to aliphatic carbon atoms; or (2) by reacting the dihalo compound with the hydantoin and subsequently reacting the 3,31-bis-hydantoin product of this reaction with formaldehyde.  In examples, polymers are obtained by reacting 5,5-dimethylhydantoin with methylene chloride, with 1,4-dichlorobutane, with bis-(2-chloroethoxy)-ethane, a ,a 1-di-chloro-p-xylene and with 1,2-dichloroethane, and then reacting the products with formaldehyde or paraformaldehyde; polymers also are obtained by reacting 5,5-dimethylhydantoin with formaldehyde to obtain 1,11-methylene-bis-(5,5-dimethylhydantoin), and then reacting this with 1,4-dichlorobutane.
Patent GB-608353-A (GB)
Title: A self locking closure for boxes, cases, cartridge magazines and the like containers
IPC: B65D43/12
Filed: 1946-02-20
Abstract: 608,353. Cartridge receptacles. PODSEDKOWSKI, J., and MITCHELL, S. S. C. Feb. 20, 1946, No. 5370. [Class 9 (i)] [Also in Group XVII] In a self-locking closure for cartridge and other containers, a tongue 3 bears resiliently against the underside of the cover 1. The cover is slit between two sets of retaining lips 8 and 9 until abutment 11 engages stop 10 and shoulder 6 engages lip 9 and locks the cover in position.
Patent GB-943338-A (GB)
Title: Measuring device for machine tools
IPC: B23Q17/22
Filed: 1960-02-16
Abstract: 943,338. Machine tool details. VEREINIGTE WERKZEUGMASCHINENFABRIKEN A.G. Feb. 16, 1960 [April 17, 1959], No. 5427/60. Heading B3B. A machine slide 1 which is to be repeatedly set to a number of predetermined positions is provided with the usual scale 5, Fig. 2, and an optical device 3 for sighting this scale. A recess in the bed 13, adjacent and parallel to the scale 5, contains a replaceable carrier member 6 which has a recess in its top surface for adjustable markers 7, Fig. 1, and locking wedges 8. When the slide has been set to a predetermined position by the scale 5 and optical device 3, a marker is moved under a microscope 4 so that parallel engravings 10 on the marker are symmetrical with a datum mark in the microscope. The marker is locked in this position and the slide may thus be repeatedly set to this position.
Patent GB-876249-A (GB)
Title: Improvements in or relating to ultrasonic vibrating devices
IPC: B06B1/08
Filed: 1959-02-17
Abstract: 876,249. Magnetostrictive devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 17, 1959 [Feb. 20, 1958], No. 5475/59. Class 40 (4). To allow cooling, the outer casing of the magnetostrictive generator described in Specification 876,248 is formed as a number of current conductors 8 which do not form a complete enclosure. The casing may include conductive gauze material. The conductors 8 and the vessel 1 form a closed secondary circuit linked with the ferrite rings and the transformer core 5.